287073681 has 8 divisors (see below), whose sum is σ = 385334400. Its totient is φ = 190097712.

The previous prime is 287073667. The next prime is 287073701. The reversal of 287073681 is 186370782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 287073681 - 2²¹ = 284976529 is a prime.

It is a super-2 number, since 2×287073681² = 164822596645779522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (287078681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320665 + ... + 321558.

It is an arithmetic number, because the mean of its divisors is an integer number (48166800).

Almost surely, 2^287073681 is an apocalyptic number.

It is an amenable number.

287073681 is a deficient number, since it is larger than the sum of its proper divisors (98260719).

287073681 is a wasteful number, since it uses less digits than its factorization.

287073681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642375.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 287073681 is about 16943.2488324996. The cubic root of 287073681 is about 659.6766712900.

The spelling of 287073681 in words is "two hundred eighty-seven million, seventy-three thousand, six hundred eighty-one".